LT1959IR#TRPBF

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LT1959IR#TRPBF is a high frequency DC/DC converter. It is mostly used in distributed power architectures such as distributed power systems with multiple output lines. It is also found in point of load applications such as telecom systems and computers. The integrated circuit (IC) allows the maximum current returns of 7.3A and output power of 28W with a wide input voltage range of 4.5V-40V up to 68V. This device implements a synchronous buck topology allowing for a single pulse current limit. The IC has a constant average output current of 7.3A with a variety of output voltages. Through its integrated MOSFET drivers and wide voltage range, the LT1959IR#TRPBF works well with various output voltages.

The LT1959IR#TRPBF is a cost-effective solution in a wide array of power delivery applications. The IC features an 80% conversion efficiency, reducing heat losses while providing reliability and low energy consumption. With an adjustable output current limit, the device allows the designer to adjust the current limit to tailor the performance and thermal requirements of the application. The IC also features internal and external frequency sync, a soft start controlled by an external resistor, and protection features such as hiccup-mode short circuit protection, thermal shutdown, and undervoltage lockout.

The device employs a true DC/DC buck switching topology to convert an input voltage to a regulated output voltage. The basic principle of the operation is simple. An electrical switch is opened and closed very rapidly in order to transfer the energy from the input to the output. A control circuit senses the output voltage and adjusts the switching speed in order to maintain the desired output voltage. During the on state of the switch, known as the “conduction period”, current from the input voltage is transferred to the output. The switch is then opened and the stored energy in the inductor is transferred to the output in form of a voltage spike. During the transition period between on and off states of the switch, energy stored in the parasitic capacitor of the switch is transferred to the output. This process is repeated simultaneously, resulting in a steady output voltage.

The LT1959IR#TRPBF is ideal for applications requiring high performance and safety such as distributed power systems and point of load converters. The device offers a wide range of output voltage, current capability and wide input voltage range. It also features analog and PWM control mode with adjustable current limit. With its 80% conversion efficiency and advanced protection features, the devices ensures reliability while saving energy.

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